Before removing the heat sink, follow these steps:
1. Turn o the computer. If you are unsure whether the computer is o or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the computer feet and base enclosure (see Computer feet and base enclosure on page 19).
5. Remove the battery (see Battery on page 21).
Remove the heat sink:
1. Remove the two screws (1) that secure the heat sink to the system board.
2. Remove the heat sink (2).
Reverse this procedure to install the heat sink.
22 Chapter 5 Removal and replacement procedures
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